mq_close(3)mq_close(3)NAMEmq_close - Closes a message queue (P1003.1b)
SYNOPSIS
#include <mqueue.h>
int mq_close ( mqd_t mqdes);
LIBRARY
Realtime Library (librt.so, librt.a)
PARAMETERS
Specifies a message queue descriptor.
DESCRIPTION
The mq_close function closes a message queue. This function removes the
association between the message queue descriptor, mqdes, and its open
message queue description. When all message queue descriptors associ‐
ated with an open message queue description have been closed, the asso‐
ciated open message queue description is removed. The message associ‐
ated with the message queue will then be deleted if mq_unlink was
already called, or is called after all processes have closed the queue.
RETURN VALUES
On successful completion, the function returns the value 0 (zero); oth‐
erwise, the function returns the value -1 and sets errno to indicate
the error.
ERRORS
The mq_close function fails under the following conditions: The mqdes
argument is an invalid message queue descriptor. An internal virtual
memory error occurred.
SEE ALSO
Functions: mq_open(3), mq_unlink(3)
Guide to Realtime Programming
mq_close(3)